It's not really that hard, all you need is to do is to make sure you know the stages beforehand, you have an emulator in which you can slow down the game, and do some savepoints. If you make a mistake, all you have to do is go back to the last savepoint, and try again.
It's not really that hard, all you need is to do is to make sure you know the stages beforehand, you have an emulator in which you can slow down the game, and do some savepoints. If you make a mistake, all you have to do is go back to the last savepoint, and try again.